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質問 29
You have a web application that receives 5X more traffic on the weekends than weekdays. You need to automatically match capacity to demand, while keeping the application up and running, and also saving cost.
Which Oracle Cloud Infrastructure (OCI) compute feature can be used to meet these requirements?
- A. Vertical Scaling
- B. Autoscaling
- C. Parallel Scaling
- D. Manual Scaling
正解: B
質問 30
Which is NOT a component of the Oracle Cloud Infrastructure (OCI) Identity domains?
- A. Dynamic Groups
- B. Groups
- C. Polices
- D. users
正解: D
質問 31
Which Oracle Cloud Infrastructure (OCl) service is NOT available as part of Oracle Cloud Free Tier?
- A. Autonomous Data Warehouse
- B. Exadata DB Systems
- C. Monitoring
- D. Compute
正解: B
質問 32
Which Oracle Cloud Infrastructure (OCI) service allows you to automate provisioning of Infrastructure resources using Terraform?
- A. Events
- B. Oracle Functions
- C. Resource Manager
- D. Compute
正解: B
質問 33
Which THREE services integrate with Oracle Cloud Infrastructure (OCI) Key Management? (Choose all answers)
- A. Block Volume
- B. Functions
- C. Auto Scaling
- D. identity and Access Management
- E. Object Storage
- F. File Storage
正解: A,B,E
質問 34
What two statements regarding the Virtual Cloud Network (VCN) are true?
- A. VCN is a global resource that span across all the Regions
- B. A single VCN can contain both private and public Subnets.
- C. VCN is a regional resource that span across all the Availability Domains in a Region.
- D. The VCN is the IPSec-based connection with a remote on premises location.
- E. You can only create one VCN per region.
正解: B,C
解説:
When you work with Oracle Cloud Infrastructure, one of the first steps is to set up a virtual cloud network (VCN) for your cloud resources.
VIRTUAL CLOUD NETWORK (VCN) :
A virtual, private network that you set up in Oracle data centers. It closely resembles a traditional network, with firewall rules and specific types of communication gateways that you can choose to use. A VCN resides in a single Oracle Cloud Infrastructure region and covers a single, contiguous IPv4 CIDR block of your choice. See Allowed VCN Size and Address Ranges. The terms virtual cloud network, VCN, and cloud network are used interchangeably in this documentation. For more information, see VCNs and Subnets.
SUBNETS :
Subdivisions you define in a VCN (for example, 10.0.0.0/24 and 10.0.1.0/24). Subnets contain virtual network interface cards (VNICs), which attach to instances. Each subnet consists of a contiguous range of IP addresses that do not overlap with other subnets in the VCN. You can designate a subnet to exist either in a single availability domainavailability domain or across an entire region (regional subnets are recommended). Subnets act as a unit of configuration within the VCN: All VNICs in a given subnet use the same route table, security lists, and DHCP options (see the definitions that follow). You can designate a subnet as either public or private when you create it. Private means VNICs in the subnet can't have public IP addresses. Public means VNICs in the subnet can have public IP addresses at your discretion. See Access to the Internet.
質問 35
Which SLA type is not offered by Oracle Cloud Infrastructure compute service?
- A. Control Plane
- B. Service Plane
- C. Data Plane
- D. Performance Plane
正解: B
解説:
Service Plane is NOT an SLA provided by OCI. See the table below:
質問 36
How will you configure high availability for an application In an Oracle Cloud Infrastructure (OCI) region with a single availability domain?
- A. Set up your application across multiple Virtual Cloud Network (VCN).
- B. Set up your application across multiple compartments.
- C. Set up your application across multiple fault domains.
- D. Divide region into multiple subregions.
正解: C
質問 37
Which statement is NOT valid regarding the Oracle Cloud Infrastructure (OCI) Block Volume service?
- A. You can expand an existing block volume in place with online resizing.
- B. You can increase the size of a block volume.
- C. You can decrease the size of a blockvolume.
- D. You can clone an existing block volume to a new, larger volume.
正解: C
質問 38
Which OCI storage service does not provide encryption for data at rest?
- A. Block Volume
- B. Local NVMe
- C. Object Storage
- D. File Storage
正解: B
解説:
NVMe stands for non-volatile memory express. It is a storage protocol created to fasten the transfer of data between enterprise and client systems and solid-state drives (SSDs) over a computer's high-speed Peripheral Component Interconnect Express bus. The characteristics are:
1) Local NVMe is NVMe SSD-based temporary storage.
2) It is the locally-attached NVMe devices to the OCI compute instance
3) It is used very high storage performance requirements, lots of throughput, lots of IOPS, local storage and when you don't want to go out on network
4) Oracle does not protect in any way through RAID, or snapshots, or backup out of the box and data is not encrypted at rest.
質問 39
Which two should be considered when designing a fault tolerant solution in Oracle Cloud Infrastructure (OCI)?
- A. performing data integrity check when using OCI File Storage Service
- B. creating a manual cluster of compute instances
- C. using multiple OCI Availability Domains (AD), where available, to deploy your solution
- D. ensuring your solution components are distributed across OCI Fault Domains
- E. writing custom scripts that will monitor your solution
正解: C,D
解説:
Creating a manual cluster of compute instances, and Writing custom scripts that will monitor your solution are not valid ways to ensure fault tolerance at all. Also, Performing Data Integrity check when using OCI File Storage Service is not valid since OCI takes care of it.
Therefore, we are left with:
1) Using multiple OCI Availibility Domains (AD), where available, to deploy your solution - Which is excellent because we have multiple AD's so that if one fails, we have a backup AD!
2) Ensuring your solution components are distributed across OCI Fault Domains - So that we can protect our deployment against unexpected power failures, AD failure etc.
質問 40
Which should you use to distribute Incoming traffic between a set of web servers?
- A. Autoscallng
- B. Dynamic Routing Gateway
- C. Internet Gateway
- D. Load Balances
正解: D
解説:
The Oracle Cloud Infrastructure Load Balancing service provides automated traffic distribution from one entry point to multiple servers reachable from your virtual cloud network (VCN). The service offers a load balancer with your choice of a public or private IP address, and provisioned bandwidth.
A load balancer improves resource utilization, facilitates scaling, and helps ensure high availability. You can configure multiple load balancing policies and application-specific health checks to ensure that the load balancer directs traffic only to healthy instances. The load balancer can reduce your maintenance window by draining traffic from an unhealthy application server before you remove it from service for maintenance.
HOW LOAD BALANCING WORKS:
The Load Balancing service enables you to create a public or private load balancer within your VCN. A public load balancer has a public IP address that is accessible from the internet. A private load balancer has an IP address from the hosting subnet, which is visible only within your VCN. You can configure multiple listeners for an IP address to load balance transport Layer 4 and Layer 7 (TCP and HTTP) traffic. Both public and private load balancers can route data traffic to any backend server that is reachable from the VCN.
1) Public Load Balancer
To accept traffic from the internet, you create a public load balancer. The service assigns it a public IP address that serves as the entry point for incoming traffic. You can associate the public IP address with a friendly DNS name through any DNS vendor.
A public load balancer is regional in scope. If your region includes multiple availability domains, a public load balancer requires either a regional subnet (recommended) or two availability domain-specific (AD-specific) subnets, each in a separate availability domain. With a regional subnet, the Load Balancing service creates a primary load balancer and a standby load balancer, each in a different availability domain, to ensure accessibility even during an availability domain outage. If you create a load balancer in two AD-specific subnets, one subnet hosts the primary load balancer and the other hosts a standby load balancer. If the primary load balancer fails, the public IP address switches to the secondary load balancer. The service treats the two load balancers as equivalent and you cannot specify which one is "primary".
Whether you use regional or AD-specific subnets, each load balancer requires one private IP address from its host subnet. The Load Balancing service supplies a floating public IP address to the primary load balancer. The floating public IP address does not come from your backend subnets.
If your region includes only one availability domain, the service requires just one subnet, either regional or AD-specific, to host both the primary and standby load balancers. The primary and standby load balancers each require a private IP address from the host subnet, in addition to the assigned floating public IP address. If there is an availability domain outage, the load balancer has no failover.
2) Private Load Balancer
To isolate your load balancer from the internet and simplify your security posture, you can create a private load balancer. The Load Balancing service assigns it a private IP address that serves as the entry point for incoming traffic.
When you create a private load balancer, the service requires only one subnet to host both the primary and standby load balancers. The load balancer can be regional or AD-specific, depending on the scope of the host subnet. The load balancer is accessible only from within the VCN that contains the host subnet, or as further restricted by your security rules.
The assigned floating private IP address is local to the host subnet. The primary and standby load balancers each require an extra private IP address from the host subnet.
If there is an availability domain outage, a private load balancer created in a regional subnet within a multi-AD region provides failover capability. A private load balancer created in an AD-specific subnet, or in a regional subnet within a single availability domain region, has no failover capability in response to an availability domain outage.
質問 41
You are querying the Oracle Cloud Infrastructure (OCI) monitoring data related to the oci_computeagent metric namespace.
Which is NOT a valid dimension name for the oci_cooputeagent metrics?
- A. shape
- B. faultDomain
- C. attachmentid
- D. availabilityDomain
正解: A
質問 42
you are analyzing your Oracle Cloud Infrastructure (OCI) usage with Cost Analysis tool in OCI Console.
Which is not a default feature of the tool?
- A. Filter costs by applications
- B. Filter costs by tags
- C. Filter costs by compartments
- D. Filter costs by date
正解: A
解説:
You can filter Costs Analysis Tools by following three ways
To filter costs by dates
To filter costs by tags
To filter costs by compartments
Reference:
https://www.oracle.com/a/ocom/docs/cloud/ops-billing-100.pdf
質問 43
Which is NOT part of the Oracle Cloud Always Free eligible resources that you can provision in your tenancy?
- A. Autonomous Database (up to two database instances)
- B. Fast Connect (1 Gbps public peering)
- C. Block Volume (up to 100 GB total storage)
- D. Load Balancing (one load balancer)
正解: B
解説:
For more information on Always Free Resources refer below official documentation page
https://docs.cloud.oracle.com/en-us/iaas/Content/FreeTier/resourceref.htm?Highlight=%20Always%20free OCI FastConnect is not offered as part of the Free tier:
質問 44
Which TWO Oracle Cloud Infrastructure (OCI) Virtual Cloud Network (VCN) firewall features can be used for controlling traffic?
(Choose all correct answers}
- A. Network visualizer
- B. Network Security Groups
- C. VNIC Metrics
- D. VCN Flow Logs
- E. Security Lists
正解: B,E
質問 45
Which of the following services can you control access to via IAM?
- A. DB systems
- B. All services including IAM
- C. Compute Instances
- D. Networking components
正解: B
解説:
Oracle Cloud Infrastructure Identity and Access Management (IAM) lets you control who has access to your cloud resources. You can control what type of access a group of users have and to which specific resources. This section gives you an overview of IAM components and an example scenario to help you understand how they work together.
質問 46
What does compute instance vertical scaling mean?
- A. Adding additional compute instances
- B. Enabling Disaster recovery
- C. Changing to a large or smaller shape
- D. Providing Fault tolerance
正解: C
解説:
Changing the Shape of an Instance (Horizontal Scaling)
You can change the shape of a virtual machine (VM) instance without having to rebuild your instances or redeploy your applications. This lets you scale up your Compute resources for increased performance, or scale down to reduce cost.
Autoscaling (vertical scaling)
Autoscaling lets you automatically adjust the number of Compute instances in an instance pool based on performance metrics such as CPU utilization. This helps you provide consistent performance for your end users during periods of high demand, and helps you reduce your costs during periods of low demand.
As load increases, instances are automatically provisioned: the instance pool scales out. As load decreases, instances are automatically removed: the instance pool scales in.
https://docs.cloud.oracle.com/en-us/iaas/Content/Compute/Tasks/resizinginstances.htm
質問 47
Which is a key benefit of using oracle cloud infrastructure autonomous data warehouse?
- A. Maintain root level acress to the underlying operating system
- B. No username and password required
- C. Apply database patches as they become available
- D. Scale both CPU and Storage without downtime
正解: D
解説:
Oracle Autonomous Data Warehouse is a cloud data warehouse service that eliminates virtually all the complexities of operating a data warehouse and securing data. It automates provisioning, configuring, securing, tuning, scaling, patching, backing up, and repairing of the data warehouse. Unlike other "fully managed" cloud data warehouse solutions that only patch and update the service, it also features elastic, automated scaling, performance tuning, security, and a broad set of built-in capabilities that enable machine learning analysis, simple data loading, and data visualizations.
Data Warehouse uses continuous query optimization, table indexing, data summaries, and auto-tuning to ensure consistent high performance even as data volume and number of users grows. Autonomous scaling can temporarily increase compute and I/O by a factor of three to maintain performance. Unlike other cloud services which require downtime to scale, Autonomous Data Warehouse scales while the service continues to run.
質問 48
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